Banca de QUALIFICAÇÃO: WANESSA REGINA DA SILVA COSTA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
STUDENT : WANESSA REGINA DA SILVA COSTA
DATE: 12/01/2026
TIME: 14:30
LOCAL: Ambiente Virtual link: https://meet.google.com/iae-esqf-vhw
TITLE:

Effects of the Herbicide Glyphosate and the Fungicide Cercobin on the Survival and Behavior of the Model Organism Daphnia magna (Straus, 1820) (Water Flea).

KEY WORDS:

Aquatic ecotoxicology; Pesticides; Daphnia magna; Toxicology; Microcrustaceans.

PAGES: 32
BIG AREA: Ciências Biológicas
AREA: Farmacologia
SUBÁREA: Toxicologia
SUMMARY:

Aquatic ecotoxicology is a field that emerged to support efforts to address contamination of water bodies by toxic compounds. Ecotoxicological analyses can determine the toxicity of chemical compounds by indicating their potential ecotoxic effects and mechanisms of action in living organisms, based on a concentration–response curve. Ecotoxicological assays are an essential tool for environmental assessment because they can characterize liquid effluents comprehensively, including their chemical constituents—especially by evaluating the bioavailability of the substances present and by detecting toxic effects resulting from interactions among these chemicals. Although the Amazon is a biome of great importance and hosts extensive biodiversity, including a wide diversity of aquatic and terrestrial organisms, it has been impacted by contamination of soil, air, water, and the organisms that inhabit it due to the intensive use of pesticides, which have been encouraged and incorporated into agriculture since the 1960s. Organisms such as Daphnia magna are used as models in toxicological testing because they are widely distributed in aquatic environments, have short life cycles, and are easy to maintain under laboratory conditions. Within this context, the objective of this study is to analyze the toxicological response of the herbicide glyphosate (Roundup®) and the fungicide thiophanate-methyl (Cercobin 875 WG®), with a behavioral focus on Daphnia magna. The study will assess the test organism’s response to the commercial application rates of these products following acute 48-hour exposure, as well as behavioral parameters related to locomotion and swimming. In addition, physiological parameters will be evaluated by measuring heart rate after 24 hours of exposure. It is expected that the experiments will determine the potential effects of the pesticides investigated on the survival and behavior of Daphnia magna, as well as examine the possible effects of the selected chemicals on locomotion and heart rate.

COMMITTEE MEMBERS:
Presidente - 1562643 - MAXWELL BARBOSA DE SANTANA
Interno - 2143267 - JOSE MAX BARBOSA DE OLIVEIRA JUNIOR
Externo ao Programa - 2158266 - EZEQUIAS PROCOPIO BRITO - UFOPA